Storm Blas

An orange warning was issued for the Balearic Islands and Gerona in Spain after the AEMET designated the storm, while a yellow warning was issued for the islands' northeast and over Levante. Menorca has also been placed on an orange rain alert.[33] Due to the storm-induced strong waves, the Port of Valencia was also closed to sea activities.[34] According to AEMET, Blas had the potential to acquire subtropical or tropical features while moving across the Mediterranean Sea and become a Medicane, according to AEMET.[35][36] The forced closure of the ports of Mahón and Ciutadella cut Menorca off from the rest of Spain.[11] A wind gust of 72 km/h (45 mph) was recorded at the island's airport, while Es Mercadal recorded a wind gust of 75 km/h (47 mph).[33] A wave height of 3.7 m (12 feet) was also recorded by a buoy due to Blas.[34] About 5 metres (16 ft), meanwhile was registered at Mallorca's north and northeastern portions. The island's Far de Capdepera reported the highest wind gust from the system at the country, at 95 km/h (59 mph) while Serra d'Alfabia at 88 km/h (55 mph).[37] Several trees were uprooted and felled as a result of these, with firefighters responding to several requests for tree blockages.[38]

A wave height of 7.9 m (26 feet) was also recorded at a port in the Balearic Islands.[39] The heaviest rainfall was received at Escorsa, Son Torella with 118.8 mm (4.68 in) on 11 November.[28] In addition, a small vessel sank off the coast of El Fonduco due to high seas, although no one was injured. Across the archipelago, 143 tree, electrical line, and street lamp blockage occurrences were recorded.[40] Disruption in transportations of fresh products in Menorca was also seen due to the closure of ports leading to the island.[41] The seaports connected to Menorca eventually opened again on 9 November.[42] Minor flooding was also seen over Fornalutx, forcing the cancellation of classes there.[43] Blas also affected Barcelona with heavy rains and rough seas, with beach stores closing and emergency plans activating in the city. Waves up to 2.3–3.3 m (7.5–10.8 feet) also breached some sand on a beach while surfers were prohibited to undergo surfing activities.[44][45] By 10 November, a sailboat crew was rescued by the emergency authorities in Mallorca as the mast of his vessel broke up. Many river basins also overflowed due to the heavy rains in the island, prompting several alerts for wind and rain.[46]

Heavy rainfall were experienced over the western part of Algeria due to Blas. Over 80 mm (3.1 in) of the downpour was forecasted by the Meteo Algerie for the country's coastal areas. Meanwhile, orange alerts were placed over the said places and inland areas for strong winds.[47] However, these rainfall benefited several sewers and valleys as they were dry due to the drought.[48] Due to storm-related flash floods, many roads were impassable to light vehicles and/or forced to close. Many homes in Chlef Province were also devastated by landslides, and some structures were damaged. Cars were also drowned in the floods, with Civil Protection authorities successfully rescuing two individuals each on Oum El Bouaghi Province and an unnamed street. Three people were also rescued from their homes in Mazouna, Relizane Province, where they were stuck. Snowfall was also reported around the country, causing one motorway to be closed.[49][50][51] Due to Blas' rains, a building collapse due to a landslide in a wilaya at Bologhine in the country's capital caused two people to be injured and three more people to be trapped in the establishment's remains; they were confirmed to be killed further.[52][53] The latter fate also happened to three more individuals at Rais Hamidou, bringing the death toll from the storm at Algeria at 6. Landslides were also reported at some areas in the capital, causing some property damages.[54]

Cap Bear in France recorded a wind gust of 140 km/h (87 mph), the highest from the system and Leucate at 111 km/h (69 mph).[1] Despite Blas remaining relatively far away from the mainland, the storm brought heavy rainfall to Corsica, with Ghisoni recording a rain accumulation of 229.1 mm (9.02 in) from 9–10 November, slightly above the normal amount for the month of November in the area. More areas reached a rainfall total that is above or in exact the month's normal level: Isolaccio-di-Fiumorbo at 170.7 mm (6.72 in) and Vivario at 167.4 mm (6.59 in), respectively.[55] This caused the Tavignanu and Gravona rivers to swell on 10 November.[56] School transportation operations are also canceled due to Blas.[57] According to the French newspaper L'Indépendant, heavy rains, attributed from Blas, killed three people in Sicily.[58]